海船船员适任证书三管轮模拟试题2(轮机英语)

Complete maintenance of electrical motors should include periodic checks for machine _____.

A propeller of 5.65m in diameter, having a mean pitch of 4.88m, turning at 72 rpm, at a speed of 11 knots (339.79m/min), will give _____ of apparent slip.

When an oil fire has been extinguished, the surface of the oil should be kept covered with foam to prevent _____.

Engine protection by means of an alarm or shutdown control can be obtained with devices that are sensitive to _____.

A feeler or thermal bulb is used for the expansion valve to _____.

The data to be recorded on this sheet _____ the performance of the engine.

The fuel is supplied to the pump through ports or openings in the _____ or cylinder of the pump.

We should apply for annual spare parts according to____Ithe need of annual overhaul IIthe storage of spare parts IIIthe storage capacity of spare parts room

The sub-multiple prefix “nano” (n) means _____.

Excessive vibration of an automatically fired auxiliary boiler can be caused by _____.

“This increase in charge air density is accomplished on most modern diesel engine types by use of exhaust gas turbo-charging, in which a turbine wheel driven by exhaust from the engine is rigidly coupled to a centrifugal type air compressor.” According to this sentence, we can know that increases density, drives the compressor directly.

The cooling system needs least maintenance work for in this kind of system.

Which of the following statements is correct relative to distillation plant operation?

The three basic elements necessary for any fire are _____.

As to the low speed diesel engine, if you want to change the coolant flow for a certain cylinder, you can regulate _____.

An axial piston, variable stroke pump is used in a vessels hydraulic steering gearUnder pressure, oil continually leaks out from between the valve plate/cylinder barrel and will _____.

A non-return valve in the air delivery line near to the compressor must be _____type similar to the compressor discharge valve.

Proper dispersion of fuel in a diesel engine cylinder is dependent upon the .

The Company should ensure that _____ involved in the Company’s SMS have an adequate understanding of relevant rules, regulations, codes and guidelines.

A diesel engine emits blue exhaust smoke as a result of ___________.

A refrigerant gives up heat when it goes through _____.

_____ that everything in the engine crankcase is correct, start up the crankcase lubricating oil pump.

Trunk type diesel engine pistons are effectively cooled when heat is .

The star formation is most commonly used and requires_____ on the alternator.

Which of the listed pumps is NOT a positive displacement pump?

On all vessels equipped with refrigeration units of over 20 cubic foot capacity, _____.

The amount of fuel injection into a diesel engine cylinder by a unit injector, is controlled by___________.

Before replacing a piston you should check that all rings are _____.

Fresh water is used for the cooling of cylinder jackets and _____ of the marine diesel engine.

When fuel is injected in a diesel engine cylinder too early, ________.

Which of the listed failures, occurring in an automated diesel generator system, should cause an audible alarm at the engine room control station?

In a refrigeration system, if the cooling water to the condenser fails, the .

Which of the followings needs not to be considered during bunkering?

When the power is shut off, the wire .

The lengthening of a crack formed in the shell plating of a ship may be prevented by _____.

Which of the following operations aboard a tanker must be recorded in the Oil Record Book _____.

The internal part of boiler should be cleaned by yard if found _____.

The term diesel engine scavenging means_____________.

A properly honed diesel engine cylinder liner will________.

The domestic fresh water pump starters are controlled by pressure switches which operate when the pressure in the tank varies within predetermined limits as water is drawn offThe word “which” means _____.

Before entering a fuel tank that has been cleaned, it should be checked with an oxygen indicator and a/an_____.

On opposite ends of a single shaft of a turboblower are a gas driven _____ and a air compressor, which are sealed each other.

The fire of sodium is classified as_____ fire.

When used with reversing reduction gears, medium-speed diesel engines should be bolted to their foundations with fitted bolts at the drive end and clearance(loosely fitted) bolts in other locations .This is done to _____.

With one or more cylinders out of operation, the engine speed must be reduced because .

You are attempting to parallel two AC generators and the synchroscope pointer is revolving in the slow directionThis indicates that the frequency of the incoming machine is _____.

High diesel engine cooling water temperatures can be caused by _____.

Crankcase sweating in a refrigeration system is caused by _____.

A common trouble with the fuel pump plungers or fuel valve spindle is _____.

A class "D" fire would be considered as burning _____.

The star-delta starter is an effective method of _____ voltage starting of a motor.

Which will cause the high pressure cutout to stop the compressor in a R-22 system?

The function of the after-cooler installed between the turbocharger and intake manifold on some diesel engine, is to _________.

Most hydraulic steering gears are fitted with relief valves which .

When a crankshaft _____ outside the engine, it should be carefully supported in a manner which will avoid imposing high bending moments on it.

Each journal and pin should be examined for _____ and grooving.

Under the provisions of applicable international conventions, ships entitled to fly the flag of a Party are subject, while in the port of a Party, to control by officers duly authorized by the PartyShips of non-parties or below convention size shall be given _____.

Which of the listed conditions can lead to cavitation in a centrifugal pump?

Moisture in the refrigerant may _____.

The air-conditioner is running in the winter and to be stopped, we should ____.

The basic training in fire prevention and fire fighting should include the practical elements which should allow the trainees to acquire the ability to _____.

Two important considerations for the proper lubrication of a diesel engine include the delivery of the oil in sufficient amount and the _____.

Which of the following operation will have a direct impact on the rate of wear in a cylinder liner ________.

Pitting in the area close to the pitch line and on the same end of each gear tooth of a reduction gear unit would be caused by ______.

It is very important that each cylinder should be _____ scavenged before the charged air is compressed.

In a diesel engine, offers the heat energy directly; works as working medium and changes the heat energy to mechanical energy.

The field coils_____ and the armature is_____This is in fact the arrangement adopted for large, heavy duty alternators.

When the current in a power transmission line is increased, the power loss _____.

The major source of chemical contaminants in hydraulic fluid is _____.

An air compressor can be unloaded at start-up by _____.

While engine is in operation the piston moves up and down, thus causing the rotation of the _____.

An electrically driven automatically operating auxiliary blower is provided for slow speed and _____ of a low speed diesel engine.

Which of the following statements represents the main difference between a relay and a contactor.

In a two-stroke engine, the piston consists of a lower part, which is named as and usually made of , and a upper part, which is referred to as and made of .

A governor automatically controls engine speed by regulating _____.

In the starting process of a diesel engine, the main object is to attain the compression conditions sufficient to _____

Some medium and high-speed diesel engines require reduction gear units to provide a useful propeller speedIn most reduction gears, the bull gear ____.

The ______has a water damp ring.

All of the diesel engine cylinder firing pressures are normal, yet all of the exhaust temperatures are lowWhich of the following situations is responsible for this condition?

Using a file without a handle may result in .

The emergency bilge suction valve is typically used _____.

Which of the listed conditions can be considered as the single greatest cause of accidents?

The duty of a deck winch is to lift and lower a load by means of a fixed rope on _____.

During _____, the starting air valves should be closed to prevent the engine from turning.

One cause of diesel engine surging can be a result of ____________.

The correct phase rotation of a three-phase alternator can be checked with a .

A two-stroke diesel engine exhaust temperature will be lower than a four-stroke diesel engine of the same displacement because the _____(1) scavenging air is cooling the exhaust gases; (2) exhaust cycle time is longer.

You hear the general alarm bells and ships whistle sound for over 10 secondsTraditionally, this is the signal for _____.

Which of the actions listed should be taken FIRST to control an oil fire in a fuel oil tank?

The____ is fitted in pair one is the main valve, the other the auxiliary or standby.

In an auxiliary diesel engine, the reason for knurling the piston skirt is to_____.

The amount of expansion space to be left in a fuel tank when fuel oil is being received, is determined by the _____.

A diesel engine is similar to a gasoline engine except that the former has no _____.

Which of the listed bearing types is an example of a solid bearing?

The transmission system transmitting power from the engine to the propeller is composed of shafts, bearings, and_____ .

A centrifugal pump produces flow with a resulting discharge head by energy conversionIt is typical for the energy conversion to follow the order of _____.

Mechanical lubricators for diesel engine cylinders are usually small reciprocating pumps which are _____.

When would you ground an electric hand tool? .

The fresh water generator produces fresh water _____.

____ is not installed on the emergency switchboard.

Possible phase relationships between voltage and current in an alternating current circuit include which of the following conditions?

The lower section of a piston is called the _____.

A diesel engine is supercharged in order to__________.

Should a person be overcome due to lack of oxygen and high concentration of refrigerant, treat with_____.

Vessels having main engines arranged for air starting are to be provided with at least ______.

A change in engine speed is required before a governor is able to make a corrective movement of fuel rackThis aspect of governing is commonly expressed as a percent and is known as .

We prefer all the spare parts _____ on board before departure.

The starting current of an a.cmotor is _____ the rated current.

When the helm demands a 20°right rudder movement from an electro-hydraulic steering gear, which of the listed actions will be the FIRST action to happen when this rudder position is attained?

Air chambers are usually fitted to reciprocating pumps in order to _____.

For an upright vessel, draft is the vertical distance between the keel and the _____.

Which of the following statements is correct concerning heat transfer?

Which of the listed conditions can cause a diesel engine to use too much lube oil?

Which of the following conditions may need to be reduced when operating a large, low speed, main propulsion, diesel engine at low loads?

To thoroughly pump out the bilges using a horizontally mounted centrifugal pump, the _____.

Which of the following statements concerning fire-tube boilers is correct? .

Duty officer informs us that the vessel is out of harbor and in “Full Ahead”We are going to run ______.

The sequence of parts in a generally used fuel oil supply system for a main engine is _____(1) tanks in the double bottom; (2) centrifuges; (3) service tank; (4) settling tank; (5) viscosity regulator.

The purpose of the compensating adjustment used in a diesel engine hydraulic governor is to ______

A warp end may be fitted for operating the derrick topping wire which adjusts the derrick _____.

A “dead front” switchboard is one _____.

If the relief valve on a diesel engine cylinder lifts, the cause could be due to ________.

A segregated ballast system is a system where _____.

While maneuvering, you discover heavy smoke coming from the turbocharger casing, you should __________.

In which of the areas listed would you expect to find the highest salt concentration in a flash evaporator? .

Which of the listed statements is a characteristic of the liquid charged power element used with thermostatic expansion valves?

When paralleled, AC generators must have the same _____.

Which of the followings will affect the spray of fuel oil?

Small droplets of water entrained in the flashed vapor produced in a flash-type evaporator, are removed by the .

In an oil cooler circulated by sea water, the oil is at a larger pressure, the result being that any leak in the cooler will mean a loss of _____.

The term “proper metering”, as applied to a diesel fuel injection system, can be best defined as _____.

The fuel booster pump and steam to fuel heater, together with fuel pipe heater tracer line should be shut off as soon as the ____ order is acknowledged.

The period of valve overlap is when _____.

The required rudder angle is transmitted hydraulically or electrically from the steering wheel at the bridge to the ______ at the steering gear, just above the rudder.

A diesel engine with a combustion chamber located between the crowns of two pistons is known as a/an _____.

The position of the piston parts in relation to each other is secured by means of _____ and a dowel pin in the crown.

Prior to closing the breaker when paralleling two AC generators, the recommended practice is to have the frequency of the incoming machine _____.

Which of the following conditions could contribute to the cracking of a diesel engine cylinder head?

_____ power is the power developed within the cylinder and can be measured by an engine indicator.

Each cylinder has one starting valve which is usually opened by air pressure and closed by _____.

The selection of an oil from the _____ depends to a great extent on the operating conditions, the design of the engine and the type of fuel to be burned.

Some pumps use packing as sealing glandThe gland should be _____.

A diesel engine cooling water system with a pH factor of 3.0 indicates a condition of _____.

In an operating diesel engine, which of the following condition is an indication of a leaking air starting valve?

When a refrigeration compressor motor fails to start, the FIRST thing that should be checked for is a _____.

An increase in the load on a turbocharged diesel engine operating at constant speed will result in an increase in __________.

Which of the following may hardness of the boiler water cause? (1) scale formation; (2) tube failure; (3) corrosion.

White smoke exhausting from a diesel engine can result from ________.

In boilers, besides maintaining the burner atomizers, air diffuser vanes, fuel temperature, forced draft fan, fuel pump and other hardware in good condition, there are some adjustments on the ______ that can produce a good flame for the most efficient operation.

What causes diesel fuel to be ignited in the cylinder of an operating diesel engine?

The heart of the diesel engine is the _____ where the fuel is burnt and the power developed.

In some designs the cylinder oil is timed so that the oil injects only on the _____.

n general, the best way for replacement of lamp is _____.

When approaching a fire from win ward, you should shield firefighters from the fire by using_____.

Increasing the moisture content of conditioned air is known as _____.

According to Maritime Labour Convention, 2006, The minimum age at the time of the initial entry into force of this Convention is _____years.

If the chemical analysis of a lube oil sample taken from a diesel engine indicates an increased neutralization number, the _____.

_____, i.ea steam cooler, may be filled in the boiler system to control the superheated steam temperature.

For occasional heavy loads, two cranes can be arranged to work togetherThe operating _____ for deck crane motors may be hydraulic electric.

Before starting a reciprocating, steam-driven pump that has been idle for a period of time, you should _____.